Home / 1,210,276.80-1,815,415.20-812,145.60

Finding the Fourth Proportional to 1,210,276.80, 1,815,415.20 and 812,145.60

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Solution

The fourth proportional to 1,210,276.80, 1,815,415.20 and 812,145.60 is: 1,218,218.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,276.80 : 1,815,415.20 = 812,145.60 : x
  2. Step 2: Convert to fraction form
    1,210,276.80/1,815,415.20 = 812,145.60/x
  3. Step 3: Cross multiply
    1,210,276.80x = 1,815,415.20 × 812,145.60
  4. Step 4: Simplify right side
    1,210,276.80x = 1,474,381,466,853.12
  5. Step 5: Solve for x
    x = 1,474,381,466,853.12/1,210,276.80
  6. Step 6: Final answer
    x = 1,218,218.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.